Describe a method to separate the dyes in coloured inks. [4 marks]

A paper chromatogram from a mixture of two substances, A and B, was obtained using a solvent of propanone. Substance B was found to travel further up the paper than substance A.

What does this tell you about substances A and B. [1 mark]

Look at the boiling points of the three liquids in the table: Liquid Boiling point in °C water 100 ethanol 78 propanol 97 A mixture was made by stirring together equal volumes of these three miscible liquids. Evaluate the effectiveness of fractional distillation as a way of separating this mixture into the three pure liquids. ​